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采用超声振荡反应与溶液挥发相结合的方法,合成了一类具有3D结构的新型超分子配位聚合物{[Cu(4,4′-bpy)(OH)(H_2O)_2](ClO_4)·2H_2O}n(4,4′-bpy=4,4′-联吡啶).获得其单晶结构,并用X-射线单晶衍射分析、元素分析、X-射线粉末衍射分析和循环伏安法对其进行表征.研究结果表明:该配合物属于单斜晶系;空间群为Cc;晶胞参数为a=1.023 00(7)nm,b=1.988 8(1)nm,c=0.749 90(5)nm,β=100.403(7)°,V=1.500 6(2)nm3,Z=4.在标题化合物中,每个铜(Ⅱ)离子由2个4,4′-联吡啶的2个氮原子,1个氢氧根的1个氧原子和2个水分子的2个氧原子配位,形成畸变的CuN2O3四角锥构型.因每个4,4′-联吡啶桥联2个铜(Ⅱ)离子,故形成了一维链状结构,而相邻的一维链状结构,又通过分子间氢键和π-π相互作用,联结成3D超分子配位聚合物.
A new type of supramolecular coordination polymer {[Cu (4,4’-bpy) (OH) (H_2O) _2] (ClO_4) with a 3D structure was synthesized by a combination of ultrasonic vibration and solution evaporation. 2H 2 O} n (4,4’-bpy = 4,4’-bipyridine). The single crystal structure thereof was obtained and analyzed by X-ray single crystal diffraction analysis, elemental analysis, X-ray powder diffraction analysis and cyclic voltammetry The results show that the complex belongs to the monoclinic system with space group Cc. The unit cell parameters are a = 1.023 00 (7) nm, b = 1.988 8 (1) nm and c = 0.74990 ) nm, β = 100.403 (7) °, V = 1.500 6 (2) nm3, Z = 4. In the title compound, each copper (II) Atoms, one oxygen atom of one hydroxide and two oxygen atoms of two water molecules coordinate to form a distorted CuN2O3 quadrangular conical configuration. Because each 4,4’-bipyridine bridges two copper ( Ⅱ) ions, forming a one-dimensional chain structure, and the adjacent one-dimensional chain structure, but also through intermolecular hydrogen bonds and π-π interactions, linked into 3D supramolecular coordination polymer.